ライフサイエンスコーパス: denitrification

1 for growth under anaerobic respiration (i.e. denitrification).

2 ams through microbial transformations (e.g., denitrification).

3 cedent soil treatment additionally influence denitrification.

4 h of infiltrating water, stimulate microbial denitrification.

5 n rates (>0.7 m/day) but can still result in denitrification.

6 st efficient than conventional nitrification-denitrification.

7 romote aerobic respiration and N removal via denitrification.

8 hypothesized to drive changes in sedimentary denitrification.

9 le with nitrogen fixation, nitrification and denitrification.

10 through sediment microbial processes such as denitrification.

11 nd on important ecosystem functions, such as denitrification.

12 e partitioning of N flow through anammox and denitrification.

13 e atmosphere mainly via microbially mediated denitrification.

14 (15)N, low delta(18)O), variably affected by denitrification.

15 a certain type of nanomaterial on microbial denitrification.

16 portant reason for its negative influence on denitrification.

17 logical and biogeochemical processes such as denitrification.

18 ormation processes such as nitrification and denitrification.

19 nodules and symbiotic nitrogen fixation and denitrification.

20 n of nitrate, and (III) by a minor impact of denitrification.

21 trogen (N(2)) as the final step of bacterial denitrification.

22 only 1.1 g N m(-2) (0.4 to 2.8 g m(-2)) from denitrification.

23 r model, we quantified N(2) originating from denitrification.

24 gas (GHG) fluxes, particularly N(2)O through denitrification.

25 s description of electron competition during denitrification.

26 critical N(2) as the final step of bacterial denitrification.

27 indicating expanded water column suboxia and denitrification.

28 namended soil at the same site generated <5% denitrification.

29 t greenhouse gas, nitrous oxide (N2 O) - and denitrification, a major nitrogen (N) loss pathway in co

30 t the N2 O production from nitrifier-induced denitrification, a potential significant source of N2 O

31 nera that are capable of oxidizing sulfur by denitrification, a process that was previously unnoticed

32 obacter shibae DFL12(T) generates energy via denitrification, a respiratory process in which nitric o

33 a was somewhat lower for anammox compared to denitrification across all treatments.

34 Anammox and denitrification activities were quantified by in situ (1

35 The potential N2O emissions, potential denitrification activity, and abundances of denitrifiers

36 plant on sedimentary microbial communities, denitrification activity, and nitrate removal.

37 mo- activity were positively correlated with denitrification activity, suggesting a role for denitrif

38 trification communities that exhibit varying denitrification activity.

39 The genomic potential for denitrification also correlated with palaeo-OMZ proxies,

40 about the spatial variability of groundwater denitrification, an important process in removing nitrat

41 n dissimilatory nitrate reduction, including denitrification, anaerobic ammonium oxidation and dissim

42 ses, including autotrophic and heterotrophic denitrification, anammox, ammonia oxidation, and nitrite

43 be used by microbes and phytoplankton, while denitrification/anammox effectively removes it by conver

44 ts metabolic profile suggests a capacity for denitrification and a possible role in dolphin health.

45 en (N) by the microbially mediated processes denitrification and anaerobic ammonium oxidation (anammo

46 ctic exist that separate loss processes like denitrification and anaerobic ammonium oxidation (anammo

47 e determined by measuring potential rates of denitrification and anammox at 31 discrete temperatures

48 With a few exceptions, Topt and Ea of denitrification and anammox did not differ in Rhode Isla

49 determined whether temperature responses of denitrification and anammox differed in shelf and estuar

50 Rates of denitrification and anammox were determined by quantifyi

51 Rates of N(2) production by denitrification and anammox were likely linked to sinkin

52 udies have examined temperature responses of denitrification and anammox, previous work suggests that

53 nitrite-rich oxygen minimum zones (OMZs) via denitrification and anammox.

54 ralization to the nitrogen loss processes of denitrification and anammox.

55 alance between nitrate respiration pathways, denitrification and dissimilatory nitrate (NO(3) (-) ) r

56 The relative expression of genes involved in denitrification and dissimilatory nitrate reduction to a

57 Heterotrophic denitrification and dissimilatory nitrate reduction to a

58 , which is required by nitrate reductase for denitrification and dissimilatory nitrate reduction to a

59 e partitioning of NO(3) (-) between complete denitrification and DNRA and the microbial communities i

60 ox activity in groundwater can rival that of denitrification and may need to be considered when asses

61 dicating effective subsurface N retention or denitrification and minimal impact of fertilizer or depo

62 Rates of N mineralization, denitrification and N(2) O emission demonstrated signifi

63 y of micro-organisms, but the impact on soil denitrification and N2O production has rarely been repor

64 ence, which kinetically limits the extent of denitrification and nitrification in water bodies.

65 ions of NO from soils occur primarily during denitrification and nitrification, and N input rates are

66 nitrifier-induced denitrification (nitrifier denitrification and nitrification-coupled denitrificatio

67 tions of these emissions that originate from denitrification and nitrification.

68 We measured denitrification and O(2) respiration rates for 10 benthi

69 Denitrification and O(2) respiration rates significantly

70 moted 33 +/- 12% nitrate removal (likely via denitrification and physical absorption effects).

71 r context, compared it with nitrate removal (denitrification and plant uptake).

72 emical processes that occur in lakes such as denitrification and primary production.

73 The isolate contains both the denitrification and ribulose 1,5-bisphosphate carboxylas

74 alues are known to be strongly indicative of denitrification and sewage effluent, corroborating a pre

75 nia-oxidizing bacteria (AOB) (namely the AOB denitrification and the hydroxylamine pathways) and the

76 6) in forest soils and streams which affects denitrification and yields higher N(2) O emissions.

77 rous oxide (N2 O), which is generated during denitrification and, in oxic soils, mainly by ammonia ox

78 but instead are largely catalysed by fungal denitrification and/or abiotic reactions (e.g., chemoden

79 re constantly losing N to the atmosphere via denitrification and/or anammox, suggesting that terrestr

80 ydrologic and chemical controls on microbial denitrification (and potentially other redox-sensitive p

81 er denitrification and nitrification-coupled denitrification) and heterotrophic denitrification in si

82 d 37 +/- 6.6% nitrate removal (primarily via denitrification), and biochar promoted 33 +/- 12% nitrat

83 ., ammonia oxidation, nitrite oxidation, and denitrification), and carbon fixation.

84 eterotrophy, sulfur and hydrogen metabolism, denitrification, and fermentation.

85 ontinuously due to volatilization, leaching, denitrification, and surface run-off.

86 from FeS oxidative dissolution, nitrite from denitrification, and U(VI) from nitrite-promoted U(IV) o

87 (15)NNO3 from a trajectory of 1 expected for denitrification are explained by isotopic over-printing

88 necticut, oysters and clams in New York, and denitrification are not included.

89 We also find that nitrogen fixation and denitrification are spatially decoupled but that neverth

90 This study provides strong evidence for co-denitrification as a major N2 production pathway, which

91 This work emphasizes the importance of denitrification as a selectable trait that may influence

92 ion (propene to propylene oxide), wastewater denitrification, as components of biosensors, or possibl

93 toproducts derived from desulfonation and/or denitrification, as well as hydroxylation of photo-oxidi

94 level-driven variations in shallow sediment denitrification associated with the cyclic drowning and

95 ther stimulated by NH4(+), whereas nitrifier denitrification at low O2 levels was stimulated by NO2(-

96 ly promoted complete S-oxidizing autotrophic denitrification at the sulfide interface.

97 Because flooded paddy fields are efficient denitrification bioreactors that can achieve decontamina

98 Their annotation revealed genes for denitrification but not N2 -fixation.

99 e for nitrous oxide reduction that completes denitrification by currently unidentified community memb

100 (Ar) to quantify net production of N(2) via denitrification by separating the biologically generated

101 e "leakage" during incomplete sulfide-driven denitrification by SUP05 Gammaproteobacteria is predicte

102 ough these transformations, otherwise costly denitrification can be combined with the synthesis of va

103 n loss on ecosystem N removal, we contrasted denitrification capacity in marsh and subtidal sediments

104 We found that, on average, denitrification capacity was 4 times higher in vegetated

105 rations up to 70 g/L, and its most efficient denitrification capacity was observed at NaCl concentrat

106 In all probability, this is due to increased denitrification caused by the expansion of the permanent

107 il moisture and nitrate, select for distinct denitrification communities that are characterized by di

108 how how environmental factors shape distinct denitrification communities that exhibit varying denitri

109 (DNRA) pathway, a process that competes with denitrification, conserves nitrogen, and minimizes nutri

110 Heterotrophic denitrification consists of the four-step sequential red

111 Both hydroxylamine oxidation and nitrifier denitrification contributed substantially to N2O accumul

112 ion and anammox, previous work suggests that denitrification could become more important than anammox

113 Chemolithotrophic denitrification coupled to pyrite oxidation is regarded

114 sotopic fractionation trends associated with denitrification (Deltadelta(15)N/Deltadelta(18)O approxi

115 led organisms are involved in the network of denitrification, dissimilatory nitrate reduction to ammo

116 y experiments, with complementary studies of denitrification during infiltration through other soils,

117 Although rates of both anammox and denitrification during the tracer tests were low, they w

118 ally resolved data to accurately account for denitrification dynamics in groundwater.

119 A high denitrification efficiency was also achieved in a synthe

120 Incorporating explicit representations of denitrification enzyme kinetics into biogeochemical mode

121 d revealed an important regulatory effect of denitrification enzyme kinetics on the accumulation of d

122 Pre-synthesized denitrification enzymes contributed 20, 13, 43, and 62%

123 HNO/M-NO(-)) coordination units are found in denitrification enzymes of the global nitrogen cycle, an

124 f E allows for activities of pre-synthesized denitrification enzymes to be differentiated from de nov

125 omass) and ecosystem functions (N2-fixation, denitrification, extracellular polymeric substances -EPS

126 processes therefore compete with anammox and denitrification for ammonium and nitrite, thereby exerti

127 esumably also be used to detect N2 fluxes by denitrification from ecosystems to the atmosphere.

128 equencing (NGS) to survey the diversity of a denitrification functional gene, nirS (encoding cytchrom

129 valuate coverage of existing DNA primers for denitrification functional genes.

130 r or plants during the experiment influenced denitrification gene (nirK, nirS, nosZI, nosZII) relativ

131 Microbial communities, denitrification gene abundance and gas production in soi

132 pled a landscape-scale metagenomic survey of denitrification gene abundance in soils with in situ den

133 Under our experimental conditions, denitrification generated mostly N(2); N(2)O was around

134 drologic gradient, the distribution of total denitrification genes (nap/nar + nirK/nirS + cNor/qNor +

135 nd an increase in the relative abundances of denitrification genes (narG and norB).

136 Wet Basins had higher proportions of denitrification genes and potential denitrification rate

137 Expression of denitrification genes at depths of high rates of chemoau

138 ty to denitrify was ubiquitous across sites, denitrification genes with higher energetic costs, such

139 nd quantitative polymerase chain reaction of denitrification genes.

140 luenced the soil microbiome and abundance of denitrification genes.

141 g consortia have the capability to carry out denitrification given favorable conditions.

142 ver, in the literature the effects of CO2 on denitrification have mainly been attributed to the chang

143 This suggests that previous estimates of denitrification have underestimated the capacity of deep

144 ugh of synthetic NO3(-) subjected to partial denitrification (high delta(15)N, high delta(18)O); (3)

145 tudy suggests metagenomics can help identify denitrification hotspots that could be protected or enha

146 o the estuary, preventing removal by natural denitrification hotspots.

147 alized nitrogen management via nitrification-denitrification if fertilizer production offsets are tak

148 These results suggest that denitrification in an aged woodchip bioreactor at consta

149 Narasin also showed evidence of stimulating denitrification in anaerobic soils within 3 days of expo

150 and N(2) production by partial and complete denitrification in anoxic zones in organic aggregates.

151 ason, indicating sustained nitrification and denitrification in disturbed soils, representing a poten

152 The spatiotemporal dynamics of denitrification in groundwater are still not well-unders

153 t the toxicity of CuO nanoparticles (NPs) to denitrification in marine sediments is highly affected b

154 hesis that anammox is more cold-adapted than denitrification in our study system.

155 rine systems, the loss of nitrogen caused by denitrification in oxygen-deficient zones is balanced by

156 ential for UQ(9) biosynthesis and, thus, for denitrification in P. aeruginosa These three genes here

157 (-2)) was emitted as N2 by the process of co-denitrification in pastoral soils over 123 days followin

158 higher N2 O yield under oxic conditions and denitrification in response to oxygen (O2 ) limitation.

159 otemporal dynamics of N(2) production due to denitrification in riparian groundwater over a six-month

160 oduction and emissions via nitrification and denitrification in rivers, reservoirs and estuaries.

161 Conversion of nitrate to N2 by denitrification in sediments accounts for half or more o

162 n-coupled denitrification) and heterotrophic denitrification in six soils (alkaline vs. acid soils).

163 transport times with reactive timescales of denitrification in soil indicate that ~75% of the cultiv

164 itrification activity, suggesting a role for denitrification in supplying both processes with nitrite

165 o enhanced mineralization, nitrification and denitrification in terrestrial ecosystems.

166 We advocate the use of this model for denitrification in the activated sludge model, which can

167 ions at shallow depths, which suggested that denitrification in the subsurface, particularly in the r

168 Denitrification, in particular, impacts socio-environmen

169 aling is lower for O(2) respiration than for denitrification, indicating that NO(3) (-) metabolism du

170 specially near the wastewater discharge, and denitrification inhibition by impacted creek water was c

171 This study demonstrates denitrification inhibition by wastewater discharge from

172 litter) and application method, biochar, or denitrification inhibitor.

173 Denitrification is a dominant nitrogen loss process in t

174 Denitrification is a microbial pathway that constitutes

175 Fauna-enhanced denitrification is a potentially important but overlooke

176 Bacterial denitrification is a respiratory process that is a major

177 Denitrification is an important pathway for nitrate tran

178 The metabolic model of denitrification is based on dual-substrate utilization a

179 OMZ, where the foraminiferal contribution to denitrification is governed by the ratio between NO(3) (

180 Our results show that denitrification is highly variable in space and time, em

181 NO in the metabolism of AOA and suggest that denitrification is inconsequential for the energy metabo

182 indicating that NO(3) (-) metabolism during denitrification is more efficient than O(2) metabolism d

183 n about the rate, arrangement, and extent of denitrification is needed to determine sustainable limit

184 his study is that the dominance of DNRA over denitrification is not explained by kinetics or thermody

185 Denitrification is the most uncertain component of the n

186 Denitrification is the only way to fully remove DIN from

187 eactive transport model was used to evaluate denitrification kinetics, which was observed in the micr

188 others; however, they resulted in incomplete denitrification, large proportion of dead bacteria in de

189 erm internal loading, while N may escape via denitrification, leading to perpetual N deficits.

190 NO3-) in respiration--through the process of denitrification--leading to the production of dinitrogen

191 Denitrification leads to the occurrence of phosphorus-be

192 ases in both states (5% of bottom area) plus denitrification losses showed increases to 10%-30% of an

193 . europaea demonstrated low electron flow to denitrification (</=1.2% of the total electron flow), ev

194 intermediates generated during photochemical denitrification (mainly NO(*), HNO, and N(2)O) to gas-ph

195 ) populations and promoting the last step of denitrification (measured by the ratio nosZI + nosZII/ni

196 ication gene abundance in soils with in situ denitrification measurements to show how environmental f

197 Since the denitrification metabolism of P. aeruginosa is believed

198 Incomplete denitrification might contribute mainly to the N(2)O pro

199 An enzyme-explicit denitrification model with representations for pre- and

200 meters compared to existing state-of-the-art denitrification models and performed equally well in the

201 Because of incomplete denitrification, N2O cycling rates are an order of magni

202 s including nitrification, nitrifier-induced denitrification (nitrifier denitrification and nitrifica

203 ilability of additional nitrite from partial denitrification (nitrite-loop) and the second one consis

204 d by gene conversion the complete gonococcal denitrification norB-aniA gene cassette, and strains gro

205 only in PN262000N21, while genes for partial denitrification occurred in both genomes.

206 of low-oxygen zones, additional water column denitrification of 38 Tg N/y, and the loss of fixed nitr

207 teps: (1) ammonium oxidation to nitrite; (2) denitrification of nitrite to nitrous oxide (N2O); and (

208 encoded by NMO genes catalyse the oxidative denitrification of nitroalkanes.

209 of stream nitrate and coupled nitrification-denitrification of stream and/or sediment ammonium; and

210 n environment-specific combination of direct denitrification of stream nitrate and coupled nitrificat

211 gnificantly enhanced aerobic respiration and denitrification of the biofilm when compared to the cont

212 rn values, suggesting widespread sedimentary denitrification on broad continental shelves.

213 that biological N(2) production, whether by denitrification or anaerobic ammonia oxidation, yields p

214 inputs versus storm drain exports implicated denitrification or leaching to groundwater as a likely f

215 lic modules are used for NOx detoxification, denitrification or other purposes.

216 with possible links to ammonia-oxidization, denitrification, pathogenesis, and heavy-metal processin

217 consumption and perhaps earlier steps in the denitrification pathway also.

218 The results further revealed the AOB denitrification pathway decreased and the NH2OH oxidatio

219 titation of ATP levels demonstrates that the denitrification pathway employs inventory such as nitrat

220 ing for the first time the importance of the denitrification pathway in determining the fate of RDX-d

221 t evidence for potential N2O cycling via the denitrification pathway in the open Atlantic Ocean.

222 indicate that genetic inventory encoding the denitrification pathway is upregulated only upon availab

223 differential expression of genes encoding a denitrification pathway previously unknown to methanotro

224 The denitrification pathway was incomplete, lacking the gene

225 with nitrite (NO2-), an intermediate in the denitrification pathway, can also result in production o

226 g the gene encoding the terminal step in the denitrification pathway, nitrous oxide reductase (nosZ).

227 mer sets that target diagnostic genes in the denitrification pathway.

228 n reaction (qPCR) of functional genes in the denitrification pathway.

229 considered an intermediate or end-product in denitrification pathways.

230 AOB) via the hydroxylamine and the nitrifier denitrification pathways.

231 duced plant N uptake, resulting in high soil denitrification potential (P < 0.05).

232 Denitrification potential (pDNF) rates were also strongl

233 reased nitrification potential and increased denitrification potential affected N2 O fluxes under WTL

234 )N2 and (30)N2 production (isotope pairing), denitrification potential measurements (acetylene block)

235 Denitrification potential was measured using slurry incu

236 This study investigated a novel denitrification process by tailoring photochemistry of n

237 Since the denitrification process is mainly driven by heterotrophs

238 had a negligible impact on the photochemical denitrification process.

239 Heme d1, a vital tetrapyrrol involved in the denitrification processes is synthesized from its precur

240 ss nitrogen (N) can best be achieved through denitrification processes that transform N in water and

241 Both abiotic and biotic denitrification processes use a single N source to form

242 re indicated neither canonical nor nitrifier-denitrification production while statistical modelling s

243 The denitrification products nitrous oxide (N2O) and dinitro

244 Failing to account for denitrification products, especially during summer rainf

245 ation enzyme kinetics on the accumulation of denitrification products.

246 variable ratios of anammox to heterotrophic denitrification, providing a mechanism for the unexplain

247 surface/volume ratio is steeper than for the denitrification rate.

248 However, denitrification rates are quite variable in time and spa

249 environmental determinants of foraminiferal denitrification rates are yet unknown.

250 The model describes denitrification rates as an analogy to how current inten

251 Accurate prediction of denitrification rates remains difficult, potentially owi

252 Denitrification rates were associated with changes in th

253 Denitrification rates were lower in organic and forest (

254 The lowest denitrification rates were observed in the impacted cree

255 temperature increased soil nitrification and denitrification rates, leading to an increase in N(2) O

256 Although we had no direct measure of denitrification rates, we found clear patterns in the mi

257 l moisture, higher nitrate and higher annual denitrification rates, whereas nirK and qNor read abunda

258 ell volume as a predictor of respiration and denitrification rates, which can further constrain foram

259 tions of denitrification genes and potential denitrification rates.

260 ology may enable more accurate prediction of denitrification rates.

261 ene until 1980 indicate that soil and stream denitrification reduced and modulated the hydrologic inp

262 factors, while the direct effects of CO2 on denitrification remain unknown.

263 al nitrogen transformation processes such as denitrification represent major sources of the potent gr

264 Denitrification represents the major pathway of N(2) O p

265 bute to the fine tuning of expression of the denitrification respirome and so adds to the understandi

266 The regulation of the denitrification respirome in strains deficient in the tr

267 Beyond that, in-stream denitrification seems to be more intense during periods

268 Complete denitrification significantly decreased with increasing

269 on mineral and gaseous nitrogen dynamics and denitrification-specific functional marker gene abundanc

270 cle due to the competition between different denitrification steps for electron donors.

271 to oxygen-limited conditions, including all denitrification steps, ammonification, sulfate respirati

272 ad higher relative abundances of anammox and denitrification suggesting stronger nitrogen removal tha

273 Outcome from this study provides a potential denitrification technology for decentralized water treat

274 e relationship between infiltration rate and denitrification that depends on the presence and nature

275 ibing organic carbon oxidation and four-step denitrification through electron competition is proposed

276 solution using dissolved methane to support denitrification, thus simultaneously enhancing nitrogen

277 S genes during nitrate flux, suggesting that denitrification to N2 and not facultative nitrate reduct

278 Overall, the contribution of denitrification to Nr removal in natural ecosystems was

279 rated into each sequential reduction step of denitrification to regulate dynamics of the denitrifier

280 marsh: (1) retention in plants and soil, (2) denitrification to the atmosphere, and (3) tidal export.

281 %) and GHG (11-18%) emissions; nitrification-denitrification treatment decreased NH3 emissions, but i

282 During bacterial denitrification, two-electron reduction of N2O occurs at

283 ted the involvement of Comamonas biofilms in denitrification under bulk aerobic conditions and elucid

284 sly published empirical correlations showing denitrification velocity (N2 flux divided by nitrate con

285 The experiments showed that heterotrophic denitrification was a negligible source of N2O under oxi

286 Variation in denitrification was driven by differences in soil respir

287 e supply of an extraneous electron donor for denitrification was established.

288 Denitrification was heterogeneous among stations and an

289 In situ denitrification was measured monthly between April 2013

290 bundance of functional genes associated with denitrification was not significantly different in the i

291 ly significant dose response curves in which denitrification was stimulated at some doses and inhibit

292 In acid soils, however, heterotrophic denitrification was the main source for N2 O production,

293 Genes for ammonium oxidation and denitrification were detected, indicating the potential

294 sting that the enzymes relevant to nitrifier denitrification were inhibited.

295 e soils, nitrification and nitrifier-induced denitrification were the dominant pathways of N2 O produ

296 ons were low, but decreased in proportion to denitrification when acetate was added to increase avail

297 ng a drop in pH that can lead to caries, and denitrification, which could inhibit several stages of d

298 d nitrite loads modulate N2O accumulation in denitrification, which may contribute to further design

299 er and water content), or their interaction (denitrification), while others were not affected (EPS).

300 to quantify how infiltration rate influences denitrification, with and without a carbon-rich PRB.